/Engine/Source/Editor/DataLayerEditor/Public/DataLayer/DataLayerEditorSubsystem.h
Removes the actors from the specified DataLayer.
true if at least one actor was removed from the DataLayer. false is returned if all the actors already belonged to the DataLayer.
bool RemoveActorsFromDataLayer ( const [TArray](API\Runtime\Core\Containers\TArray)< [AActor](API\Runtime\Engine\GameFramework\AActor) * > & Actors, [UDataLayerInstance](API\Runtime\Engine\WorldPartition\DataLayer\UDataLayerInstance) * DataLayer )